JP2012522653A5 - - Google Patents

Description

The layer has a thickness of 0.5 to 10 [mu] m, preferably 0.5 to 5 [mu] m, and an intermediate region of the layer , i.e., a region of 30 to 70% of the thickness in the growth direction is shown in a high-resolution cross-sectional transmission electron microscope as measured by less than 100 nm, preferably less than 50 nm, most preferably nanocrystalline microstructure of an average crystal size of 25nm less than. This average crystal size is an average from measuring the size of at least 10 adjacent crystals.

Claims (15)

Comprising a body of carbide, cermet, ceramics, high speed steel (HSS), polycrystalline diamond (PCD) or polycrystalline cubic boron nitride (PCBN), a hard and wear resistant coating is applied, a cutting tool insert comprising at least one layer, said layer is a _{(Zr x Al 1-x)} N y, 0.50 at <x <0.75 and 0.90 ≦ y <1.30 Yes, having a thickness of 0.5 to 10 μm and having a nanocrystalline microstructure consisting of a single cubic phase or a mixture of hexagonal and cubic phases (Zr _x Al _1-x ) N _y A cutting tool insert characterized by that. (Zr _x Al _1-x ) N _y The cutting tool insert according to claim 1, wherein the layer has a thickness of 0.5 to 5 μm. Wherein the average crystal size is 100nm less than, the cutting tool insert according to claim 1 or 2. The cutting tool insert according to any one of claims 1 to 3, wherein the average crystal size is less than 50 nm. 1 . The cutting tool insert according to any one of claims 1 to 4, wherein 00 <y <1.25. 1.00 and wherein the <a y <1.20, the cutting tool insert according to any one of claims 1-5. Wherein the elemental composition x and y is less than 10% variation across the layer, the cutting tool insert according to any one of claims 1-6. It said layer and having a hardness of 23GPa greater cutting tool insert according to any one of claims 1-7. Said body, T iN, TiC, Ti ( C, N) or (Ti, Al) inside the U computing the N, and / or T iN, TiC, Ti (C , N), (Ti, Al) N or an outer co computing oxide, (Zr, Al) coating thickness of the total including N layer, characterized in that it is a 0.7～20Myu m, one of claims 1-8 1 The cutting tool insert according to Item. Cutting tool insert according to claim 9, characterized in that the body has a coating inside of TiN or (Ti, Al) N and / or a coating outside of TiN or (Ti, Al) N. 11. The cutting tool insert according to claim 9 or 10, characterized in that the total coating thickness is 2-7 [mu] m. (Zr, Al) N layer, by the cathodic arc evaporation from the cathode to provide the desired layer composition, the following conditions, namely, the evaporation current of 50-200, the 0 to-300 V bias, and 200-800 In a mixed atmosphere of Ar + N ₂ at a temperature of 1 ° C. , 1 . Characterized in that it is deposited in a total pressure of 0~7.0P a, method of making a cutting tool insert according to any one of claims 1 to 11. The (Zr, Al) N layer is cathodic arc evaporated from the cathode resulting in the desired layer composition, with the following conditions: 50-200 A evaporation current, 0-300 V bias, and 200-800 ° C. temperature. And pure N ₂ The method for producing a cutting tool insert according to any one of claims 1 to 11, characterized in that it is deposited at a total pressure of 1.0 to 7.0 Pa. (Zr, Al) N layer, by the magnetron sputtering from the target to provide the desired layer composition, the following conditions, namely, the power density applied to the sputter cathode 0.5~15W / cm ^2, 0~ Deposited at a total pressure of 0.1-7.0 Pa in a mixed atmosphere of Ar + N ₂ or in a pure N ₂ atmosphere at a bias of −300 V and a temperature of 200-800 ° C. method of making a cutting tool insert according to any one of claims 1 to 11. 50 to 500 m / minute at a cutting speed, in the case of milling, cutting speed and in accordance with the insert shape, on average feed per blade 0.08～0.5M m, steel, stainless steel, Use of a cutting tool insert according to any one of claims 1 to 11 for metal cutting applications in hardened and hardened steel.